Vest pocket type flash light



Jan. 31, 1933. I M. E. BucHHoLZ 1,895,913

VEST POCKET TYPE FLASH LIGHT Original Filed March 9, 1929 Fig.5

magma 9 BY ATTORNEY.

' mx E. Bessemer),

Patented Jan. 31, 1933 UNITED STATES PATENT, OFFICE 1? 3030mm, NEWJERSEY, assronoa r'o rn'n BRIGHT s'rar.

nar'rnay conrsmz', or. nonoxm New JERSEY, A conrona'rron or NEW YORKvns'rfrooxn'r 'rvrn rna'sn mm Application filed March 9, 1929, SerialNo. 345,752." Renewed July 20, 1938.

,This invention relates to flashlights of the vest pocket type andprovides improvements therein. I

The invention provides a flashlight of the type referred to utilizing tothe fullest extent the interior space for receiving the cells or batteryused for supplying current, whereby to furnish a flashlight ofrelatively small diameter of maximum capacity.

The invention further provides an im-. proved switch construction,whereby sus-' tained or momentary light can readily be obtained at will,and whereby accidental closing of the circuit and consequent wastage ofthe battery is avoided.

Other features of improvement will be hereinafter pointed out inconnection with the description which follows.

Several embodiments of the invention are illustrated in the accompanyingdrawing, wherein,

Figure 1 is a view in side elevation (with parts shown in section) ofone embodiment.

Fig. 2 is a similar view of a second embodiment..

Fig. 3 is a similar view of a third embodiment. Fig. 4 is a detail viewof a part shown in Fig. 3.

Fig. 5 is a longitudinal sectional view illustrating still anotherembodiment.

Referring to said drawing, numeral 10 designates a casing,

about the length of a fountain pen, and pref erably of a diameterapproximating that of a large-barrel fountain pen. A socket 12 isprovided at one end 11 of the casing for receiving a miniatureincandescent lamp 14; 1 and 2, the socket mem-' member 12 is connectedto the casing by suitable means, as for example a bayonet joint fractionof .an inch conveniently formed of a- 10, in such manner as tube of thinsheet metal, and preferably madethe lamp, thus;

the glass bulb of the incandescent lamp. The detachable form of socketas usual.

i As shown in Fig. 1, the. end portion 11 of the casing may be made asan integral art thereof, of slightly reduced diameter. e part 11 mayalso be. formed as a separate part, preferably having a screw-threadengagement with the main body of the casing 10, as indicated at 24, thescrew threads bein "of suflicient number and pitch to permit 0 movementofthe part 11 through a small without danger of disengagement orweakening the connection, for a purpose shortly to be described.

a As shown in Fig. 1, the end 25 of the casing maybe provided -with acap 26, having a screw-thread connection therewith, as indicated at 28,the number of threads and the pitchjbeing such as to permit of amovement of thecap on the casing of asmall fraction of an inch withoutweakening the connection. I 1

A spring 30 is provided within the casing to bear upon the upper face ofone of the cells w, and normally press it away from the lampcontact 22,the spring 30 preferably being a spiral spring surroundingthe lampand'bearing againstthe socket member 12 at one end, and against theupper face of the cell mat the other end as already described. Normallythe spring 30 presses the cell or cells lengthwise of'the easing into aposition where the middle contact :1)- of the cell is out of contactwith the contact 22 of breaking circuit. To complete the circuit,contacts :22 and 22 are brought together against the tension of thespring 30. In the construction shown in Fig. 1, this is effected byturning the cap 26,

whichthrough the screw threads pushes the cells bodily into contact withthe contact 22' of the lamp. The screw-threaded cap 26 provides a meansfor making a permanent (or sustained) contact between the lamp and thecells, the cap being provided with an inward pro ection 32 hearing onthe uncovered botmomentary contact between the cell contact m and lampcontact 22. Thismeans conveniently comprises a push-button 37 which ispreferably completely housed in a recessed portion 39 formed in the end25 of the casing, as shown in Fig. 2, or in a recessed portion 40 in cap26, end 25 of the casing, as shown in Fig. 5. The recessed portion 39(or 40) is preferably rovided with an in-turned flange 42, and t e pushbutton vided with out-turned flanges 44, 45 on either side of flange 42,whereby said push-button 37 is retained in said recess. spring 47 may beprovided for pressing back said push button 37 after being pushed in,but'the spring 47 may be readily omitted and spring 30 relied on forbutton. The

metal, and ma zinc bottom of pressing back said pushush-button ispreferably of es contact with the uncovered a cell, and also with themetalliccasing 10, or casing IOand metallic the socket-member 11 cap 26,thereby providing a. grounded connection between the lamp socket 12 andthe zinc pole of the battery or cell.

inside diameter of flange at the inner end being a where a cap is usedto close 37 is preferably pro-f sleeve of substantially less diameterthan the said casing, and a push button within said sleeve adapted tomake contact with the bottom of said cell, said ush-button being aninverted cup having at both ends outwardly extendin flanges, the aptedto bear against the inner end of' said sleeve and the one at'theouterend adapted to slide against the inner'side of said sleeve,saidsleevea-lso. having an inwardly extending flange at-its inner end, andfurther comprising a spring adapted --to bear against said flange on theinner end of said sleeve and said the outer end of said-button.

In witness whereof, I have hereunto signed my name. 7

' MAX E. BUCHHOLZ;

flange on The lamp recess 16 may be providedwith a glass-covered cap 50,as shown in Figs. 3 and 4, which may be connected to the end 11 of thecasing, as'by means of a bayonet-joint connection 52; As shown in Fig.3, the end ll'may be formed as an extension 30, and may be formed asanintegral part thereof, as shown.

For confining the flashlight in a vest-pocket, a spring clip 60 may beprovided on the side of the casing 10, in similar manner to the springclip on a fountain pen.

WVhat is claimed is:-

In a vest pocket flash-light of the type comprising a long tubularcasing of relatively small diameter, a lamp-socket at one end adaptedto. hold a lamp in such position that the center terminalof the lamp isin line with th carbon terminal of a cell within the casing, and aspring in the top of the casing adapted to normally press the aforesaidterm lninals of the lamp and cell away from one another; means, at theend of the casing op site the socket. for pushing on the bottom of acell against the force of cell tcrn'iinals, said means comprising abasepiece having an inwardly projecting tubular 7 said spring to makecontact between the aforesaid lamp and ioo

